The decomposition pathways of C4F7N/CO2/O2 mixtures in the PTFE vapors
Source abstract
Abstract
The C4F7N/CO2/O2 mixtures have better arc-extinguishing performance compared to the C4F7N/CO2 mixtures, and they have a broader application prospect as a substitute for SF6 in high-voltage circuit breakers and gas insulated substation pipelines. Under high-temperature conditions, the polytetrafluoroethylene (PTFE) vapor produced by insulating materials can affect the decomposition path of the C4F7N/CO2/O2 mixed gas, thereby impacting the arc-extinguishing performance of the mixed gas. This paper conducts quantum chemical calculations based on density functional theory to study the decomposition mechanism of the C4F7N/CO2/O2 mixed gas under the influence of PTFE vapor. This study optimizes the structure of reactants and intermediates and evaluates the energy of molecules using the Gaussian-4 theoretical method. By analyzing the potential energy of the decomposition paths that the C4F7N/CO2/O2 mixed gas may undergo under PTFE vapor, the final decomposition path of the mixed gas under PTFE vapor is obtained. This research can provide a reference for the development of environmentally friendly gases in the study of high-voltage circuit breakers.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Vacuum and Plasma Arcs · High voltage insulation and dielectric phenomena · Combustion and Detonation Processes
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Electrical Engineering, Shenyang University of Technology 1 , Shenyang 110870,
State Grid Shandong Electric Power Company Research Institute 2 , Jinan 250003,
Funding
Scientific Research Fund of Liaoning Provincial Education Department · Natural Science Foundation of Liaoning Province
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